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參數(shù)資料
| 型號(hào)： | UPD784021 |
| 廠商： | NEC Corp. |
| 英文描述： | 16/8-BIT SINGLE-CHIP MICROCOMPUTER |
| 中文描述： | 16/8-BIT單片機(jī) |
| 文件頁(yè)數(shù)： | 61/90頁(yè) |
| 文件大?。?/td> | 614K |
| 代理商： | UPD784021 |
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61
m
PD784020, 784021
OSCILLATOR CHARACTERISTICS (T
A
= –40 to +85 °C, V
DD
= 4.5 to 5.5 V, V
SS
= 0 V)
Resonator
Ceramic resonator
or crystal
External clock
Recommended circuit
Min.
4
4
0
10
Unit
MHz
MHz
ns
ns
Parameter
Oscillator frequency (f
XX
)
X1 input frequency (f
X
)
X1 input rising and falling times
(t
XR
, t
XF
)
X1 input high-level and low-
level widths (t
WXH
, t
WXL
)
Max.
25
25
10
125
X1
X2
V
SS
C1
C2
X1
X2
HCMOS
Inverter
Caution When using the system clock generator, run wires in the portion surrounded by dotted lines
according to the following rules to avoid effects such as stray capacitance:
Minimize the wiring.
Never cause the wires to cross other signal lines.
Never cause the wires to run near a line carrying a large varying current.
Cause the grounding point of the capacitor of the oscillator circuit to have the same potential
as V
SS
. Never connect the capacitor to a ground pattern carrying a large current.
Never extract a signal from the oscillator.
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|---|---|
| UPD784031GC-8BT-A | 制造商:Renesas Electronics Corporation 功能描述:MCU 8BIT/16BIT 78K4 CISC ROMLESS 3.3V/5V 80PQFP - Trays 制造商:Renesas Electronics 功能描述:16 制造商:Renesas Electronics 功能描述:16 Cut Tape |
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| UPD784031YGC-8BT | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD784031YGC-8BT-A | 制造商:Renesas Electronics Corporation 功能描述: |
| UPD784031YGK-9EU | 制造商:Renesas Electronics Corporation 功能描述: |
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